Anyone know the voltage and amperage limits for powering things off the pi zero?

Raspberry Pi hardware discussion (including peripherals)
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joe7dust
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Anyone know the voltage and amperage limits for powering things off the pi zero?

Post by joe7dust » Fri Jul 22, 2016 5:07 am

It would appear that you can only use one of the 5V rails at a time to me, because I powered the amp and speaker just fine by itself and also the display just fine by itself, but when I tried hooking both up at once neither one powered up.

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Camble
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Re: Anyone know the voltage and amperage limits for powering things off the pi zero?

Post by Camble » Fri Jul 22, 2016 5:17 am

This is why we build a short power strip to supply all the components with power directly from the supply.

https://pinout.xyz/pinout/pin2_5v_power

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Re: Anyone know the voltage and amperage limits for powering things off the pi zero?

Post by statikeffeck » Fri Jul 22, 2016 6:47 am

Camble wrote:This is why we build a short power strip to supply all the components with power directly from the supply.

https://pinout.xyz/pinout/pin2_5v_power
I thought this would cause components to possibly draw too much current and thus cause the pi to shutdown.

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Re: Anyone know the voltage and amperage limits for powering things off the pi zero?

Post by joe7dust » Fri Jul 22, 2016 7:15 am

Camble wrote:This is why we build a short power strip to supply all the components with power directly from the supply.

https://pinout.xyz/pinout/pin2_5v_power
Are we able to use #2 and #4 at the same time? I wasn't able to, just trying to find out if it is the fault of my wiring or something.

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Re: Anyone know the voltage and amperage limits for powering things off the pi zero?

Post by Camble » Fri Jul 22, 2016 7:31 am

@statikeffeck I don't mean run the powerstrip from the Pi's 5v rail.

@joe7dust I don't see why you can't use both at once, but I tend not to power anything from the Pi itself.

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Re: Anyone know the voltage and amperage limits for powering things off the pi zero?

Post by joe7dust » Sat Jul 23, 2016 8:17 am

Camble wrote:@statikeffeck I don't mean run the powerstrip from the Pi's 5v rail.

@joe7dust I don't see why you can't use both at once, but I tend not to power anything from the Pi itself.
I don't plan to put a hub in my build, so not sure of a better way to go about it. There's also 2 pads on the back of the pi that are supposedly for USB, but I think those carry data only...

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Re: Anyone know the voltage and amperage limits for powering things off the pi zero?

Post by Camble » Sat Jul 23, 2016 8:34 am

What power supply are you using? Why not power everything directly from the supply?

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Re: Anyone know the voltage and amperage limits for powering things off the pi zero?

Post by joe7dust » Sat Jul 23, 2016 8:37 am

Camble wrote:What power supply are you using? Why not power everything directly from the supply?
For testing purposes I just plug the pi into a powerbank, but in the final build I plan to remove the powerbank shell and any extraneous parts and solder the internals directly to use the powerbank as the battery.



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